Novell ZENWORKS LINUX MANAGEMENT 7.3 IR2, Administration Manual, Page: 649 / 684

Updating ZENworks Imaging Resource Files 649
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Linuxrc attempts to locate and load the
settings.txt
file, either on the root of the imaging CD, or
on the ZENworks imaging server in the
/srv/tftp/boot
directory. From
settings.txt
, linuxrc
reads and processes any parameters that pertain to itself, then copies
settings.txt
to the root (
/
) of the file system.
Linuxrc then also attempts to locate and load a file named
driverupdate
. It is usually located in the
same directory as
root
. This file is used to update drivers and other files in the imaging distribution.
The
driverupdate
file is based on standard SUSE technology during a PXE boot. Because the
network must be operating normally in order to obtain
driverupdate
, this file cannot update
drivers for the active network device. However, other files and drivers can be updated by using the
driverupdate
file. For more information, see Section F.4.3, “Using the Driverupdate File
Method,” on page 654 .
F.2.2 zenworks.s
A normal SUSE installation for SUSE Linux or SLES boots to a small distribution to perform a
YaST installation. ZENworks Imaging boots with the same installation system, but instead of
starting a YaST installation, it starts the ZENworks Imaging process. Control is turned over to the
ZENworks script
/bin/zenworks.s
, which is the main script file for ZENworks imaging
processing. The script performs a certain number of setup tasks, then gives control to the appropriate
script for the selected imaging process. For more information on the imaging process, see
Chapter 28, “Understanding Preboot Services in ZENworks Linux Management,” on page 329 .
One of the setup tasks is to apply any update files. When booting from a CD,
zenworks.s
copies
the
/addfiles
directory structure to the Linux file system. For more information, see Section F.4.1,
“Adding Files to an Imaging Boot CD,” on page 651 .
F.3 Understanding ZENworks Partitions and
Command Line Parameters
The following sections provide an understanding of the ZENworks partition and imaging commands
that are used when updating Linux drivers:
Š
Section F.3.1, “The ZENworks Partition,” on page 649
Š Section F.3.2, “Command Line Parameters and Variables,” on page 650
F.3.1 The ZENworks Partition
The ZENworks partition is used to store the files required to load Linux into RAM, making the
result similar to using a CD or PXE boot method. The ZENworks partition has a similar boot media
layout as an imaging CD. It has a minimum size of 150 MB.
The files stored on the ZENworks partition are
/boot/loader/linux
,
/boot/loader/initrd
,
and
/boot/root
, which are the same directories as on the imaging CD. In ZENworks 7, the boot
loader continues to be lilo, which loads Linux as described under Section F.2, “Understanding
Device Boot Processes in a ZENworks Imaging Environment,” on page 648 . The
driverupdate
and
settings.txt
files are searched for and loaded from the ZENworks partition.
If you need to modify the Linux files, you must modify the initrd or root file sets the same way as
you would for other boot methods. For information, see
Section F.4.2, “Adding Files to the Initrd or
Root File Systems,” on page 651 .